Table 3.
Total losses of IQ points in US children 0–5 years of age associated with major risk factors, including developmental exposure to industrial chemicals that cause neurotoxicity
| Number of IQ points lost | |
|---|---|
| Major medical and neurodevelopmental disorders | |
| Preterm birth | 34 031 025 |
| Autism spectrum disorders | 7 109 899 |
| Paediatric bipolar disorder | 8 164 080 |
| Attention-deficit hyperactivity disorder | 16 799 400 |
| Postnatal traumatic brain injury | 5 827 300 |
| Environmental chemical exposures | |
| Lead | 22 947 450 |
| Methylmercury | 1 590 000* |
| Organophosphate pesticides | 16 899 488 |
| Other neurotoxicants | Unknown |